Hi, everyone! I'm taking my first trip to San Jose soon and want to know what sights I should check out. This is a work-related trip so it will be short and with little free time, but I'm still hoping to squeeze in some fun.

I've taken several trips to the Bay Area so I've seen lots already in San Francisco itself and in the surrounding parts (Napa Valley, Carmel, Monterrey Bay Aquarium, etc.) and as such am not looking for a road trip to the "bigger" stuff nearby; I want to focus on San Jose itself. I don't have a lot of free time in this trip so I'm going to take it easy, but still I'll have at least a half day to do stuff. I've already put the "Winchester Mystery House" on the list... looks neat! Anything else I should do that afternoon? I'll be near the convention center and my free time will be Friday from about noon until evening. Thanks!

(Edited for typo)